taylor



(No Model.)

B. H. TAYLOR.

SLIDE VALVE.

No. 585,798. Patented July 6, 1897.

i E m IIIIIIIIIIIIIIIIIIIIIII M Jr NiTEn STATES PATENT Enron,

BENJAMIN H. TAYLOR, OF ROSEDALE, MISSISSIPPI, ASSIGNOR OF ONE-HALF TO OSCAR G. MCGUIRE, OF "SAME PLACE.

S LlDE-VALVE.

SPECIFICATION forming part of Letters Patent No. 585,798, dated July 6, 1897.

Application filed June 27,1896. Serial No. 597,264. (No model.)

T 0 aZZ whom it may concern:

Be it known that I, BENJAMIN HENDERSON TAYLOR, a citizen of the United States, residing at Rosedale, in the county of Bolivar and State of Mississippi, have invented certain new and useful Improvements in Slide- Valves; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanyin g drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to certain new and useful improvements in balanced slidevalves; and it has for its object, among others, the provision of a valve of this character which will combine in a single element both a slide-valve and steam-chest, thus dispensing entirely with the ordinary form of steamchest and admitting the steam directly to the hollow interior of the valve, from which the steam is supplied through suitable ports or steamways alternately to the piston-heads at opposite ends of the cylinder.

My invention consists in the cylinder having a valve-seat formed on its top and a slidevalve which forms both a valve and a steamchest, combined with a vertically-adjustable top plate that is connected to the cylinder and provided with a tubular opening through its centerja second adjustable plate provided with a tubular collar which extends into the tubular opening in the top plate, and set-screws which are passed through the top plate and regulate the pressure upon the valve, as will be more fully described hereinafter.

The object of my invention is to provide a double means for regulating both the pressure upon the top of the slide-valve and the pressure of the valve upon its seat.

To these ends and to such others as the invention may pertain the same consists in the novel construction and in the peculiar combination, arrangement, and adaptation of parts, all as more fully hereinafter described, shown in the accompanying drawversely across the valve and is preferably ings, and then specifically defined in the appended claim.

The invention is clearly illustrated in the accompanying drawings, which, with the letters of reference marked thereon, form a part of this specification, like letters of reference indicating the same parts throughout the several views, and in which drawings Figure 1 is a vertical longitudinal section of a valve constructed in accordance with my invention, the same being shown in connection with the cylinder of a steam-engine. Fig. 2 is a central vertical transverse section of the same. Fig. 3 is a top plan view of the slide-valve.

Reference now being had to the details of the drawings by letter, A designates a steam-engine cylinder of ordinary construction, having the usual ports 0 and D leading to opposite ends of the cylinder.

E is my improved slidevalve, which is seated upon and designed to move over the ground-valve seat or level surface 13, provided upon the upper face of the cylinder, being provided with the usual rod or pitman which conveys motion to the machinery operated by the engine. This valve E consists, essentially, of a hollow box or chamber having. at its longitudinal center an exhaustchamber H, which chamber extends transsemicircular in cross-section, the open bottom of the chamber registering with an exhaust-port I, leading to an outlet J at the side of the cylinder, as shown. The. bottom plate of the slide-valve is also provided with ports ctand b, which when the valve is moved will register with the ports 0 and D of the cylinder alternately. I

Steam is admitted to the interior chamber of the valve through a vertical inlet-pipe Gr, which is passed through a fixed plate K and communicates with an elongated opening F in the top plate of the valve, the said elongated opening being of sufficient length to admit at all times of a free ingress of the steam to the valve regardless of its throw.

N is a plate'having a central opening, surrounding which is an upwardly-extended collar or pipe N, which collar or pipe is passed upward through the interior of a corresponding collar M, rising from the plate K. O O are set-screws which are passed downward through the plate K and at their lower ends bear against the upper face of the plate N. It will be seen that by adjusting these nuts any desired degree of pressure may be secured upon the said plate N, which bears upon the upper face of the slide-valve.

The lower end of the pipe G, I have shown as provided with an outwardly-extending flange g, which bears against the upper end of the collar M, and this union or connection of the pipe with the said collar being maintain ed by means of a suitable screw-threaded and steamed-packed collar N.

The plate Kis held in place by means of posts L, which rise from the upper face of the cylinder and at their upper ends are screwthreaded. Jam-nuts Z Z upon these posts, bearing upon both the upper and lower faces of the plate, serve to hold the plate securely in place and permit of its vertical adjustment, as will be readily seen. This plate is made vertically adjustable for the purpose of affording a double adjustment for regulating the pressure of the valve upon its seat and the pressure of the plate N upon the top of the valve. In first adjusting the parts in place for operation the screws 0 are turned back and the plate K is adjusted down upon or very close to the top of the plate N. Should the valve work loose, so that the steam escapes at either top or bottom, it can be tightened either by means of the set-screws O or by adjusting the jam-nuts Z, as may be desired. This double adjustment of parts enables small short set-screws O to be used.

The operation of the valve will be readily understood. It will be seen that the steam will be admitted alternately to the opposite ends of the cylinder as the valve is reciprocated and that as the steam is entering the port at one end of the cylinder the exhauststeam from the opposite end of the cylinder will enter the exhaust-chamber in the valve and thence will pass out through the exhaustport I.

What I claim to be new, and desire to secure by Letters Patent, is-

The cylinder, having a valve-seat formed on its top, and a hollow valve which forms a combined steam-chest and valve, combined with the adjustable plate E, having a-tubular collar N upon its top to form a continuation of the steam-pipe; the plate K, also vertically adjust-able, and provided with a tubular collar at its center to make connection with the steam-pipe; the rods L, rising from the cylinder and passing through the plate K, the jam-nuts Z on the rods, and the setscrews 0, which extend through the plate K and regulate the pressure of the plate N upon the valve, substantially as shown.

In testimony whereof I affiX my signature in presence of two witnesses.

BENJAMIN II. TAYLOR.

Witnesses:

W. L. VAN LOAN, FRANKLIN II. HoUeH. 

